This section is from the book "Materia Medica And Therapeutics: An Introduction to the National Treatment of Disease", by John Mitchell Bruce. Also available from Amazon: The pharmacology and therapeutics of the materia medica.
Cannabis Indica-Indian Hemp.-The dried flowering tops of the female plants of Cannabis sativa. For medicinal use that which is grown in India, and from which the resin has not been removed, is alone to be employed.
Characters.-Tops consisting of one or more alternate branches, bearing the remains of the flowers and smaller leaves and a few ripe fruits, pressed together in masses which are about two inches long, harsh, of a dusky-green colour and a characteristic odour. Various preparations are known in different parts of the East, as Bang, Hashish, Churrus, and Gunjah.
Composition.-Cannabis indica contains a brown amorphous resin, cannabin, and a volatile oil, cannaben, either or both of which may be the active principle.
Extractum Cannabis Indicae. Alcoholic. 6 in 1. Dose, 1/4 to 1 gr.
Tinctura Cannabis Indica. 1 in 20. Incompatibles, water and watery infusions. Dose, 5 to 20 min. rubbed with 1 fl.dr. of mucilage.